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[PMID]: 26968733
[Au] Autor:Bekesi N; Kochevar IE; Marcos S
[Ad] Address:Instituto de Optica Consejo Superior de Investigaciones Cientificas, Madrid, Spain.
[Ti] Title:Corneal Biomechanical Response Following Collagen Cross-Linking With Rose Bengal-Green Light and Riboflavin-UVA.
[So] Source:Invest Ophthalmol Vis Sci;57(3):992-1001, 2016 Mar.
[Is] ISSN:1552-5783
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:PURPOSE: To compare the biomechanical corneal response of two different corneal cross-linking (CXL) treatments, rose bengal-green light (RGX) and riboflavin-UVA (UVX), using noninvasive imaging. METHODS: A total of 12 enucleated rabbit eyes were treated with RGX and 12 with UVX. Corneal dynamic deformation to an air puff was measured by high speed Scheimpflug imaging (Corvis ST) before and after treatment. The spatial and temporal deformation profiles were evaluated at constant intraocular pressure of 15 mm Hg, and several deformation parameters were estimated. The deformation profiles were modeled numerically using finite element analysis, and the hyperelastic corneal material parameters were obtained by inverse modeling technique. RESULTS: The corneal deformation amplitude decreased significantly after both CXL methods. The material parameters obtained from inverse modeling were consistent with corneal stiffening after both RGX and UVX. Within the treated corneal volume, we found that the elasticity decreased by a factor of 11 after RGX and by a factor of 6.25 after UVX. CONCLUSIONS: The deformation of UVX-treated corneas was smaller than the RGX-treated corneas. However, the reconstructed corneal mechanical parameters reveal that RGX produced in fact larger stiffening of the treated region (100-µm depth) than UVX (137-µm depth). Rose bengal-green light stiffens the cornea effectively, with shorter treatment times and shallower treated areas. Dynamic air puff deformation imaging coupled with mechanical simulations is a useful tool to characterize corneal biomechanical properties, assess different treatments, and possibly help optimize the treatment protocols.
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1603
[Js] Journal subset:IM
[St] Status:In-Process
[do] DOI:10.1167/iovs.15-18689

  2 / 289174 MEDLINE  
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[PMID]: 26902665
[Au] Autor:Hirsch M; Dhara S; Diesendruck CE
[Ad] Address:Schulich Faculty of Chemistry, Technion-Israel Institute of Technology , Haifa, Israel.
[Ti] Title:N-Arylation of Tertiary Amines under Mild Conditions.
[So] Source:Org Lett;18(5):980-3, 2016 Mar 4.
[Is] ISSN:1523-7052
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:A transition-metal-free procedure for the N-arylation of tertiary amines to sp(3) quaternary ammonium salts is described. The presented conditions allow for the isolation of trialkylaryl, dialkyldiaryl, and novel triarylalkyl ammonium salts, including N-chiral quaternary ammonium salts. The reaction works at room temperature, open to air with electron-rich or -poor benzyne precursors and different tertiary amines, allowing the synthesis of a broad range of N-aryl ammonium salts that have applications in a variety of fields.
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1603
[Js] Journal subset:IM
[St] Status:In-Process
[do] DOI:10.1021/acs.orglett.6b00078

  3 / 289174 MEDLINE  
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[PMID]: 26937921
[Au] Autor:Fromonot J; Chaumet G; Gavarry O; Rostain JC; Lucciano M; Joulia F; Brignole M; Deharo JC; Guieu R; Boussuges A
[Ad] Address:From the UMR-MD2, Dysoxie Suractivité, Institut de Recherche Biomédicale des Armées (IRBA) & Aix-Marseille Université, Faculté de Médecine Nord, Marseille, France (JF, GC, J-CR, FJ, J-CD, RG, AB); Laboratoire HandiBio EA 4322, Université du Sud Toulon Var, La Garde, France (OG); Laboratoire de biomécanique appliquée, Aix Marseille Université, Faculté de Médecine Nord, Marseille, France (ML); and Department of Cardiology, Arrhythmologic Centre, Ospedali del Tigullio, Lavagna, Italy (MB).
[Ti] Title:Hyperoxia Improves Hemodynamic Status During Head-up Tilt Testing in Healthy Volunteers: A Randomized Study.
[So] Source:Medicine (Baltimore);95(8):e2876, 2016 Feb.
[Is] ISSN:1536-5964
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Head-up tilt test is useful for exploring neurally mediated syncope. Adenosine is an ATP derivative implicated in cardiovascular disturbances that occur during head-up tilt test. The aim of the present study was to investigate the impact of hyperoxia on adenosine plasma level and on hemodynamic changes induced by head-up tilt testing.Seventeen healthy male volunteers (mean age 35 ±â€Š11 years) were included in the study. The experiment consisted of 2 head-up tilt tests, 1 session with subjects breathing, through a mask, medical air (FiO2 = 21%) and 1 session with administration of pure oxygen (FiO2 = 100%) in double-blind manner. Investigations included continuous monitoring of hemodynamic data and measurement of plasma adenosine levels.No presyncope or syncope was found in 15 of the 17 volunteers. In these subjects, a slight decrease in systolic blood pressure was recorded during orthostatic stress performed under medical air exposure. In contrast, hyperoxia led to increased systolic blood pressure during orthostatic stress when compared with medical air. Furthermore, mean adenosine plasma levels decreased during hyperoxic exposure before (0.31 ±â€Š0.08 µM) and during head-up tilt test (0.33 ±â€Š0.09 µM) when compared with baseline (0.6 ±â€Š0.1 µM). Adenosine plasma level was unchanged during medical air exposure at rest (0.6 ±â€Š0.1 µM), and slightly decreased during orthostatic stress. In 2 volunteers, the head-up tilt test induced a loss of consciousness when breathing air. In these subjects, adenosine plasma level increased during orthostatic stress. In contrast, during hyperoxic exposure, the head-up tilt test did not induce presyncope or syncope. In these 2 volunteers, biological study demonstrated a decrease in adenosine plasma level at both baseline and during orthostatic stress for hyperoxic exposure compared with medical air.These results suggest that hyperoxia was able to increase blood pressure during head-up tilt test via a decrease in plasma adenosine concentration. Our results also suggest that adenosine receptor antagonists are worth trying in neurocardiogenic syncope.
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1603
[Cu] Class update date: 160325
[Lr] Last revision date:160325
[Js] Journal subset:AIM; IM
[St] Status:In-Process
[do] DOI:10.1097/MD.0000000000002876

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[PMID]: 26894568
[Au] Autor:Gao Y; Tahmasebi A; Dou J; Yu J
[Ad] Address:Key Laboratory of Advanced Coal and Coking Technology of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, People's Republic of China; Sino-Steel Anshan Thermo-Energy Research Institute, Anshan 114044, People's Republic of China....
[Ti] Title:Combustion characteristics and air pollutant formation during oxy-fuel co-combustion of microalgae and lignite.
[So] Source:Bioresour Technol;207:276-84, 2016 May.
[Is] ISSN:1873-2976
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Oxy-fuel combustion of solid fuels is seen as one of the key technologies for carbon capture to reduce greenhouse gas emissions. The combustion characteristics of lignite coal, Chlorella vulgaris microalgae, and their blends under O2/N2 and O2/CO2 conditions were studied using a Thermogravimetric Analyzer-Mass Spectroscopy (TG-MS). During co-combustion of blends, three distinct peaks were observed and were attributed to C. vulgaris volatiles combustion, combustion of lignite, and combustion of microalgae char. Activation energy during combustion was calculated using iso-conventional method. Increasing the microalgae content in the blend resulted in an increase in activation energy for the blends combustion. The emissions of S- and N-species during blend fuel combustion were also investigated. The addition of microalgae to lignite during air combustion resulted in lower CO2, CO, and NO2 yields but enhanced NO, COS, and SO2 formation. During oxy-fuel co-combustion, the addition of microalgae to lignite enhanced the formation of gaseous species.
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1603
[Js] Journal subset:IM
[St] Status:In-Process

  5 / 289174 MEDLINE  
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[PMID]: 26025448
[Au] Autor:Akintoye E; Shi L; Obaitan I; Olusunmade M; Wang Y; Newman JD; Dodson JA
[Ad] Address:Master of Public Health Program, School of Public Health, Harvard University, Boston, USA....
[Ti] Title:Association between fine particulate matter exposure and subclinical atherosclerosis: A meta-analysis.
[So] Source:Eur J Prev Cardiol;23(6):602-12, 2016 Apr.
[Is] ISSN:2047-4881
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:BACKGROUND: Epidemiological studies in humans that have evaluated the association between fine particulate matter (PM2.5) and atherosclerosis have yielded mixed results. DESIGN: In order to further investigate this relationship, we conducted a comprehensive search for studies published through May 2014 and performed a meta-analysis of all available observational studies that investigated the association between PM2.5 and three noninvasive measures of clinical and subclinical atherosclerosis: carotid intima media thickness, arterial calcification, and ankle-brachial index. METHODS AND RESULTS: Five reviewers selected studies based on predefined inclusion criteria. Pooled mean change estimates and 95% confidence intervals were calculated using random-effects models. Assessment of between-study heterogeneity was performed where the number of studies was adequate. Our pooled sample included 11,947 subjects for carotid intima media thickness estimates, 10,750 for arterial calcification estimates, and 6497 for ankle-brachial index estimates. Per 10 µg/m(3) increase in PM2.5 exposure, carotid intima media thickness increased by 22.52 µm but this did not reach statistical significance (p = 0.06). We did not find similar associations for arterial calcification (p = 0.44) or ankle-brachial index (p = 0.85). CONCLUSION: Our meta-analysis supports a relationship between PM2.5 and subclinical atherosclerosis measured by carotid intima media thickness. We did not find a similar relationship between PM2.5 and arterial calcification or ankle-brachial index, although the number of studies was small.
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1603
[Js] Journal subset:IM
[St] Status:In-Process
[do] DOI:10.1177/2047487315588758

  6 / 289174 MEDLINE  
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[PMID]: 26676076
[Au] Autor:Protesescu L; Zünd T; Bodnarchuk MI; Kovalenko MV
[Ad] Address:Department of Chemistry and Applied Bioscience, ETH Zürich, 8093, Zürich, Switzerland....
[Ti] Title:Air-Stable, Near- to Mid-Infrared Emitting Solids of PbTe/CdTe Core-Shell Colloidal quantum dots.
[So] Source:Chemphyschem;17(5):670-4, 2016 Mar 3.
[Is] ISSN:1439-7641
[Cp] Country of publication:Germany
[La] Language:eng
[Ab] Abstract:Light emitters and detectors operating in the near- and mid-infrared spectral regions are important to many applications, such as telecommunications, high-resolution gas analysis, atmospheric pollution monitoring, medical diagnostics, and night vision. Various lead chalcogenides (binary, ternary, and quaternary alloys) in the form of quantum dots (QDs) or quantum wells provide narrow bandgap energies that cover the broad infrared region corresponding to wavelengths of 1-30 µm. Here, we report an inexpensive, all-solution-based synthesis strategy to thin-film solids consisting of 5-16 nm PbTe QDs encapsulated by CdTe shells. Colloidally synthesized PbTe QDs were first converted into core-shell PbTe/CdTe QDs, and then deposited as thin films. The subsequent fusion of the CdTe shells is achieved by ligand removal and annealing in the presence of CdCl2 . Contrary to highly unstable bare PbTe QDs, PbTe/CdTe QD solids exhibit bright and stable near- to mid-infrared emission at wavelengths of 1-3 µm, which is also retained upon prolonged storage at ambient conditions for one year.
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Entry month:1603
[Js] Journal subset:IM
[St] Status:In-Process
[do] DOI:10.1002/cphc.201501008

  7 / 289174 MEDLINE  
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[PMID]: 26215543
[Au] Autor:Proietto LR; Plummer CE; Maxwell KM; Lamb KE; Brooks DE
[Ad] Address:SACS, University of Florida, 2015 SW 16th Avenue, Gainesville, FL, 32608, USA....
[Ti] Title:A retrospective analysis of environmental risk factors for the diagnosis of deep stromal abscess in 390 horses in North Central Florida from 1991 to 2013.
[So] Source:Vet Ophthalmol;19(4):291-6, 2016 Jul.
[Is] ISSN:1463-5224
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:PURPOSE: The purpose of this investigation was to identify potential environmental risk factors for the diagnosis of equine deep stromal abscesses (DSA) in the subtropical climate at the University of Florida Veterinary Medical Center (UFVMC). METHODS: Cases included were selected from the UFVMC medical record and imaging database, and included all cases of equine DSA diagnosed during the period from December 1991 to December 2013 in patients residing in north central Florida. Patient date of diagnosis and atmospheric data was obtained for north central Florida for the corresponding time period. Univariate and multivariate general linear models were generated testing effects and interactions between environmental conditions. RESULTS: When year, sulfur dioxide (SO2 ) and wind were analyzed in the presence of each other, a one-mile per hour increase in wind (P = 0.005) significantly increased the number of DSA cases by 1.63 cases per year. When the influence of temperature was evaluated in conjunction with year and nitrogen dioxide (NO2 ), the number of cases decreased by 0.1534 per year for every degree increase in temperature (°C) (P = 0.039). CONCLUSIONS: Wind speed is the first significant atmospheric risk factor to be identified for DSA formation in the horse. The importance of environmental variance in the incidence of DSA indicates that the pathogenesis of DSA formation may be multifactorial, interdependent and provides support in some horses for the micropuncture hypothesis of DSA formation related to the involvement of environmental conditions causing precorneal tear film and epithelial damage.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1607
[Js] Journal subset:IM
[St] Status:In-Data-Review
[do] DOI:10.1111/vop.12297

  8 / 289174 MEDLINE  
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[PMID]: 27369289
[Au] Autor:Zhang W; Wu L; Wu X; Ding Y; Li G; Li J; Weng F; Liu Z; Tang S; Ding C; Wang S
[Ad] Address:Jiangsu Collaborative Innovation Center for Modern Crop Production/National Engineering and Technology Center for Information Agriculture/ Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing, 210095, China....
[Ti] Title:Lodging Resistance of Japonica Rice (Oryza Sativa L.): Morphological and Anatomical Traits due to top-Dressing Nitrogen Application Rates.
[So] Source:Rice (N Y);9(1):31, 2016 Dec.
[Is] ISSN:1939-8425
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:BACKGROUND: Lodging in rice production often limits grain yield and quality by breaking or bending stems. Excessive nitrogen (N) fertilizer rates are the cause of poor lodging resistance in rice, but little is known about the effect of top-dressing N application rates on the mechanical strength of japonica rice plants, especially how the anatomical structure in culms is affected by N. In this study, field experiments on two japonica rice varieties with three top-dressing N application rates, 0 kg N ha(-1) (LN), 135 kg N ha(-1) (MN), and 270 kg N ha(-1) (HN) as urea, were conducted. Wuyunjing23, a lodging-resistant japonica rice cultivar and W3668, a lodging-susceptible japonica rice cultivar were used. The lodging index, breaking strength, morphological and anatomical traits in culms were measured in this study. RESULTS: The visual lodging rate in japonica rice differed remarkably between genotypes and top-dressing N treatments. The higher lodging index of rice plants was primarily attributed to the weak breaking strength of the lower internodes. The longer elongated basal internodes were responsible for higher plant height and a higher lodging index. Correlation analysis showed that breaking strength was significantly and positively correlated with the thickness of the mechanical tissue but was significantly and negatively correlated with the inner diameter of the major axis (b2). With increasing top-dressing N rates, the sclerenchyma cells of the mechanical tissues and the vascular bundles of the Wuyunjing23 cultivar varied little. The plant height, inner diameter of the minor axis (a2) and b2 increased significantly, but the area of the large vascular bundle (ALVB) and the area of the small vascular bundle (ASVB) decreased significantly and resulted in lower stem strength and a higher lodging index under higher top-dressing N conditions. The culm diameter of the W3668 cultivar increased slightly with no significant difference, and the sclerenchyma cells in the mechanical tissues and vascular bundles showed deficient lignifications under high top-dressing N conditions. Moreover, the ALVB and the ASVB decreased significantly, while the area of air chambers (AAC) increased rapidly. CONCLUSIONS: An improvement in the lodging resistance of japonica rice plants could be achieved by reducing the length of the lower internodes, decreasing the inner culm diameter and developing a thicker mechanical tissue. Top-dressing N application increased the plant height and inner culm diameter and decreased the ALVB and the ASVB of the Wuyunjing23 cultivar and caused deficient lignified sclerenchyma cells, lowered the ALVB and the ASVB, and increased the AAC of the W3668 cultivar resulting in weaker stem strength and a higher lodging index.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1607
[Da] Date of entry for processing:160702
[St] Status:PubMed-not-MEDLINE
[do] DOI:10.1186/s12284-016-0103-8

  9 / 289174 MEDLINE  
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[PMID]: 27370498
[Au] Autor:Li J
[Ad] Address:School of material science and engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
[Ti] Title:Characterization for Cassie-Wenzel wetting transition based on the force response in the process of squeezing liquid drops by two parallel superhydrophobic surfaces.
[So] Source:Rev Sci Instrum;87(6):065108, 2016 Jun.
[Is] ISSN:1089-7623
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Application of superhydrophobic surfaces is partly limited by the escaping of the entrapped air beneath the liquid sitting on the superhydrophobic surfaces, i.e., the so-called Cassie-Wenzel wetting transition. Here, to characterize this wetting transition, a linear force response relation with certain abnormal systematic deflection showing the wetting transition information is constructed for the process of squeezing the test liquid drop by two parallel structured (superhydrophobic) surfaces. The linear force response relation is validated by replotting the experimental data from the former work. And then the wetting transition information is investigated on a numerically generated force response curve with certain errors by taking into account the liquid pressure variation during the wetting transition. Results show that the wetting transition can cause an obvious bulge on the linear force response curve. We believe that this method has a potential application in characterizing the robustness of superhydrophobic surfaces.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1607
[Js] Journal subset:IM
[St] Status:In-Data-Review
[do] DOI:10.1063/1.4953333

  10 / 289174 MEDLINE  
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[PMID]: 27370471
[Au] Autor:Shoulders WT; Locke R; Gaume RM
[Ad] Address:CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA.
[Ti] Title:Elastic airtight container for the compaction of air-sensitive materials.
[So] Source:Rev Sci Instrum;87(6):063908, 2016 Jun.
[Is] ISSN:1089-7623
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:We report on the design and fabrication of a simple and versatile elastic canister for the compaction and hot-pressing of air-sensitive materials. This device consists of a heated double-ended floating die assembly, enclosed in a compressible stainless steel bellows that allows the action of an external hydraulic press in a uniaxial motion. The enclosure is fitted with vacuum, gas, and electrical feedthroughs to allow for atmosphere control, heating, and in situ process monitoring. The overall chamber is compact enough to be portable and transferrable into and out of a standard laboratory glovebox, thus eliminating the problem of exposing samples to ambient atmosphere during loading and unloading. Our design has been tested up to 600 °C and 7500 kg-force applied load, conditions within which transparent ceramics of anhydrous halides can be produced.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1607
[Js] Journal subset:IM
[St] Status:In-Data-Review
[do] DOI:10.1063/1.4954925


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